Warner Bros. has updated their release calendar, announcing 300: Battle of Artemisia (which is rumored to soon receive a new title) for August 2, 2013.

A sequel to Zack Snyder’s 300, in turn based on the graphic work by Frank Miller, will be directed by Noam Murro and is slated to star Rodrigo Santoro, Eva Green, Sullivan Stapleton and Jamie Blackley. The film is expected to tell, in part, the story of Greek General Themistocles, who lead Athens against Persian invaders in a battle that played out simultaneously with the Battle of Thermopylae (depicted in the first film).

Green plays the title role of Artemisia while Stapleton has been cast in the lead role. Blackley plays Calisto, who is inspired by his father to lead a band of soldiers to war.

The release date puts the film up against Columbia Pictures’ Smurfs 2 and Dean Parisot’s comic book sequel, RED 2.